A Remarkable Clock

Thcrc is acloekat Brussels which comes nbout as near being perpetual motion as can beinvented, foi the sun does the winding. A shaft exposed to the solar raya causes an updraught of air which sets a tan in motion. The fan actuates mechanisin which raises the weight oí the doek until it reaches the top, ai d thenputs a break on the fan until tho weight has gone down a little, when the fan is againliberatcdand proceedes to act as before. Ak long as the sun shines frequently enouli and the inachineiy does not wear out, the clock is practically a perpetuii motion machine.